<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
		function factorial(num){
			if (num <=1) {
				return 1;
			} else {
				return num * factorial(num-1)
			}
		}
		
		function factorial(num){
			if (num <=1) {
				return 1;
			} else {
				return num * arguments.callee(num-1)
			}
		}
	</script>
</html>
